fixed path to lab

Author: pevnak

Diff for: docs/make.jl

@@ -88,7 +88,7 @@ pages = [
     "9: Intermediate representation" => [
         "Lecture v.2 (newest)" => "./lecture_09/lecture.md",
         "Lecture v.1 (older)" => "./lecture_09_v1/lecture.md",
-        "Lab" => "./lecture_09/lab.md",
+        "Lab" => "./lecture_09_v1/lab.md",
     ],
 
     "10: Parallel programming" => [